Message11179

As follows we can retrieve the Xss value at runtime.

Jython 2.7.1rc1 (, Mär 4 2017, 22:31:12) 
[OpenJDK 64-Bit Server VM (Oracle Corporation)] on java1.8.0_121
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>>> from java.lang.management import ManagementFactory
>>> rtmx = ManagementFactory.getRuntimeMXBean()
>>> rtmx
sun.management.RuntimeImpl@64f555e7
>>> ags = rtmx.getInputArguments()
>>> ags
[-Xmx512m, -Xss1024k, -Dpython.home=dist, -Dpython.executable=dist/bin/jython]
>>> ags[1]
u'-Xss1024k'
>>> 

Based on this we could implement a @skipif guarding the case that Xss is <3m.

Parsing of the -Xss value should better done on Java-side in a utility method, e.g. in Py.java or so. Also one must consider to properly map the k, m or whatever properly.

I know, this method only reveals -Xss if that arg was given on command line. However since our launchers always provide it, this would work reliably on Jython. Should still have a fallback (to None?) if the value wasn't provided, e.g. because launched directly via java-command.

How should None then be treated by the @skipif? Actually I don't care. Either way is fine; someone running tests not using a launcher should know what he is doing.